package cn.tedu;

import java.sql.*;

public class Demo04 {
    public static void main(String[] args) throws SQLException {
        //创建一个数据库连接对象  异常抛出
        Connection conn = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/empdb?characterEncoding=utf8&serverTimezone=Asia/Shanghai",
                "root","root"
        );
        //创建执行SQL语句的对象
        Statement s = conn.createStatement();
        //执行查询的SQL语句 查询到的结果封装到rs结果集对象中
        ResultSet rs = s.executeQuery("select * from emp");
        //遍历查询到的数据
        while (rs.next()){
            String name = rs.getString("name");
            double sal = rs.getDouble("sal");
            System.out.println(name+":"+sal);
        }
        conn.close();

    }
}
